/Engine/Plugins/Editor/ContentBrowser/ContentBrowserAliasDataSoure/Source/ContentBrowserAliasDataSource/Public/ContentBrowserAliasDataSource.h
Attempt to mark the given item as private (NotExternallyReferenceable).
True if the item was marked private, false otherwise
virtual bool PrivatizeItem ( const [FContentBrowserItemData](API\Editor\ContentBrowserData\FContentBrowserItemData) & InItem )